I must say that the advertising for this year's Census has been either inept (snapshot of America) or offensive (get your piece of the pie). But we still filled ours out and sent it in this week. Unless you're a reality show family, this decade's form is thankfully quite brief. It sticks to the standard name, sex, race statistics that have been present on the form since 1790.
One question I was surprised wasn't on the form was whether each inhabitant was a US citizen or not. It would seem to me that you would want representation to be based on the number of citizens in an area, not merely the number of inhabitants. But I don't think this has ever been the case, going back to the 3/5ths compromise the founders themselves created.